Flat Bar Stock, Aluminum, 2024, T351, Bar, 12 in Overall Length, Length Tolerance +/-1.000 in, 2 in Overall Width, Width Tolerance +/-0.003 in, 0.5 in Thickness, Thickness Tolerance +/-0.002 in, Fabrication Cold Finished, Heat Treatment Pre-Hardened, Heat Treatable Yes, Mechanical Finish Mill, Yield Strength 47,000 psi, Tensile Strength 68,000 psi, 120 Brinell Hardness, B120 Rockwell Hardness, Includes Material Certificate Yes, Standards AMS 4120, AMS-QQ-A-225, ASTM B211